Collimator Primary Arms SLx MD-25 25 mm Micro Dot Gen II AutoLive 2 MOA Red Dot

Primary Arms SLx MD-25 is a lightweight and durable closed‑tube reflex sight. Equipped with the AutoLive motion sensor, it is practical and energy efficient. Proven in rigorous testing, this sight is suitable for firearms with strong recoil. The manufacturer assures it will handle harsh environments — it operates in rain and dusty conditions (IP67 rating). The sight body is made from aluminum and filled with nitrogen. Lenses are fog‑resistant. To ensure fast and precise target acquisition in any lighting, the sight uses a 2 MOA dot reticle with 12 brightness levels. An anti‑reflective coating provides good light transmission, resulting in a clear, color‑accurate image.

Battery and AutoLive

The Primary SLx MD-25 stands out with an impressive runtime from a single battery of up to 50,000 hours — more than 5 years of continuous operation. This energy efficiency is provided by AutoLive, a system that turns the sight off when the firearm is stationary and wakes it when it is moved. This is both convenient and practical, significantly extending battery life and minimizing operating costs. The package includes risers and spacers so the sight can be mounted easily on AR, AK rifles, shotguns, etc.

Primary Arms SLx MD-25 — sight construction

The sight housing is made of anodized aluminum. A matte finish protects the metal from oxidation and hardens the surface, improving scratch resistance. The sight features a lightweight yet rugged design, with a length of 76.2 cm and a weight of 184 g. Primary Arms SLx MD-25 is therefore a good option for shooters looking to reduce the overall weight of their setup (weapon + sight).
A large brightness control knob is located on the right side of the housing and is easy to operate. The first two settings are intended for night vision compatibility. The highest setting is suited for bright sunlight.
The 25 mm lenses are coated with an anti‑reflective finish to ensure a clear image. They allow for both‑eyes‑open shooting without parallax error.

Lifetime warranty from Primary Arms

Primary Arms stands for innovation, fair pricing, and strict quality control. Trusting its own technologies and solutions, the American company offers a lifetime warranty on its products.

Primary Arms SLx MD-25 features:

• versatile — anti‑reflective coatings, night‑vision compatible, IP67 rated;
• energy efficient — AutoLive can extend single‑battery operation up to 50,000 hours;
• durable — made from anodized 6061 aluminum;
• includes risers, spacers and CR2032 battery;
• lifetime warranty.